Sphere mySphere = new Sphere(0.3f,Sphere.GENERATE_NORMALS,100,sphereApp);
Transform3D tfSphere = new Transform3D();
tfSphere.setTranslation(new Vector3f(0.0f,0.0f,-1.0f));
TransformGroup tgSphere = new TransformGroup(tfSphere);
tgSphere.addChild(mySphere);
//*** Generate (the root of) the scenegraph. ***